Probably not a lot. But it's one of those "death by a thousand cuts" things I can't ignore in an iphone purchase. Between that and the fingerprint reader, I'm out. If they brought either back I could justify it.
I really do miss my headphone jack. Not being able to charge and listen to music at the same time is dumb as hell.
However, my 6 was proper dying, so once they bought out the SE or whatever with a sensible form factor and fingerprint scanner I was convinced it was better than trying to switch